Solution: Find Pivot Index
Discover how to find the pivot index in an array where the sums on both sides are equal. Learn to use running left and right sums to solve the problem in linear time with constant space. This lesson helps you efficiently identify the pivot index while understanding the importance of tracking sums during iteration.
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Statement
Given an integer array nums, find the pivot index of the array.
The pivot index is defined as the index where the sum of all elements strictly to its left equals the sum of all elements strictly to its right. If the index lies on the left edge of the array, the left sum is considered
Return the leftmost pivot index. If no such index exists, return
Constraints:
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